Add Python 3.13 support; drop Python 3.7 support #106

	name: Unit tests

	on: [ pull_request ]

	permissions:
	contents: read

	jobs:
	unit_tests:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout repository.
	uses: actions/checkout@v4

	- name: Set up Python.
	uses: actions/setup-python@v5
	with:
	# minimum supported version
	python-version: 3.8

	- name: Install dependencies.
	run: \|
	pip install -r pytests/requirements.txt
	pip install -v -e .

	- name: Run Tests.
	run: pytest

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